National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Grand Marais/Cook County Airport (KCKC)

Lat: 47.84°NLon: 90.39°WElev: 1784ft.

Overcast

46°F

8°C

Humidity 93%
Wind Speed N 13 G 18 mph
Barometer 29.82 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 12 Oct 2:35 am CDT
Extended Forecast for

Grand Portage MN

  • Overnight

    Overnight: Showers likely, mainly after 4am. Cloudy, with a low around 41. Breezy, with a northeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 41 °F

    Showers
    Likely and
    Breezy

  • Columbus Day

    Columbus Day: Showers likely, mainly before 9am. Cloudy, with a high near 50. Breezy, with a northeast wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 50 °F

    Breezy.
    Showers
    Likely then
    Chance
    Showers

  • Monday Night

    Monday Night: Showers, mainly before 2am. Low around 38. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 38 °F

    Showers and
    Breezy

  • Tuesday

    Tuesday: A 10 percent chance of showers before 7am. Cloudy, with a high near 51. North wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph.

    High: 51 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 39. Calm wind becoming northwest around 5 mph after midnight.

    Low: 39 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 54. Northwest wind around 5 mph.

    High: 54 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers after 1pm. Partly sunny, with a high near 53. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 15 mph.

    High: 53 °F

    Partly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers before 1am. Mostly cloudy, with a low around 37. Breezy, with a southwest wind 5 to 10 mph becoming northwest 15 to 20 mph after midnight. Winds could gust as high as 35 mph.

    Low: 37 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

Overnight
Showers likely, mainly after 4am. Cloudy, with a low around 41. Breezy, with a northeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Columbus Day
Showers likely, mainly before 9am. Cloudy, with a high near 50. Breezy, with a northeast wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Showers, mainly before 2am. Low around 38. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
A 10 percent chance of showers before 7am. Cloudy, with a high near 51. North wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 39. Calm wind becoming northwest around 5 mph after midnight.
Wednesday
Partly sunny, with a high near 54. Northwest wind around 5 mph.
Wednesday Night
Partly cloudy, with a low around 38. Calm wind.
Thursday
A chance of showers after 1pm. Partly sunny, with a high near 53. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 15 mph.
Thursday Night
A chance of showers before 1am. Mostly cloudy, with a low around 37. Breezy, with a southwest wind 5 to 10 mph becoming northwest 15 to 20 mph after midnight. Winds could gust as high as 35 mph.
Friday
A slight chance of showers before 1pm. Partly sunny, with a high near 48. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 40 mph.
Friday Night
Mostly clear, with a low around 31. Northwest wind 5 to 10 mph, with gusts as high as 25 mph.
Saturday
Sunny, with a high near 51. Breezy, with a southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 35 mph.
Saturday Night
Mostly clear, with a low around 40. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 35 mph.
Sunday
Mostly sunny, with a high near 58. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 35 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Portage MN
 47.96°N 89.69°W
Last Update:
2:21 am CDT Oct 12, 2026
Forecast Valid:
2am CDT Oct 12, 2026-6pm CDT Oct 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation